Bicycle-lock.



m w w N u M d 8 .01 n e nula P m 0 UL WE u Y -m 8 2 2 8 7 6 m N (Application'fl'led Oct. 30, 1900.)

(No Model.)

INVENTOR.

A TTORNE Y.

THE "cams Perms co. momurnn, WASWNGTOM a c.

llnrrn HARVEY M. TVOOD, OF DENVER, COLORADO.

BICYCLE-LOCK.

SPECIFICATION forming part of Letters Patent No. 678,822, dated July 16, 1901. Application filed October 30, 1900. Serial No. 34,969. (No model.)

To ctZZ 2072 0731, it may concern:

Be it known that I, HARVEY M. W001), a citizen of the United States of America, residing at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Bicycle-Locks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in bicycle-locks; and it consists of the features hereinafter described and claimed, all of which will be fully understood by reference to the accompanying drawings, in which- Figure 1 is a fragmentary perspective view of a bicycle, showing my improved lock in place, the plunger being projected to the looking position. Fig. 2 is a section taken through the device shown on a larger scale, the plunger being withdrawn or in the unlocked position. Fig. 3 is a detail view of the key employed. Fig. 4 is a section showing the plunger projected. Figs. 5 and 6 are sections taken on the lines 3 y and m w, respectively.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate a bracket adapted to embrace one of the arms 6 of the front fork of a bicycle. This bracket is slipped into place by passing it over the lower end of the fork-arm when detached from the wheel 13. One extremity of the bracket terminates in a threaded bolt, to which is ap plied a washer 7, against which is secured a nut 7. The shape of the embracing bracket is such that as the nut is tightened the washer is forced against the sloping sides of the bracket, the metal of which is such that it yields to the pressure and is made tight on the fork-arm. Formed integral with or attached to the bracket 5 is a tubular casing 8, open at both ends and adapted to receive a hollow plunger 9, which is closed at one end by a plug 9*, which secures one extremity of a spring-wire trigger 10, provided with an inward bond 10 and terminating at its free extremity in a projection 10 forming a right angle with the body of the trigger. The extremity of the projection 10 normally enters an opening 9 formed in the shell of the plunger. (See Fig. 2.) When the plunger is projected, (see Fig. 4,) the projection 10 of the trigger enters a recess 5, formed in the base of the bracket and registering with the opening'9 of the plunger-shell. Near the open extremity of the plunger is located a crosspin 9, which protrudes at one extremity and enters a longitudinal groove 8, formed in the casing 8. This groove is open at the casing extremity adjacent the bracket, but terminates in a shoulder 8, near the opposite extremity of the casing, to prevent the plunger from escaping in that direction. When the plunger is in the position shown in Fig. 2, it may be moved to the position shown in Fig. 1 by inserting any suitable device into the extremity of the casing and pushing against the cross-pin until the plunger is in the position shown in Figs. 1 and 4.

To unlock the plunger, a key 12 of the pattern shown in Fig. 3 is employed. This key is inserted in the end 8 of the casing and moved to the position shown in Fig. 4. The key consists of a flat piece of metal having a shoulder 12 and two separated notches 12 and 12 located near its inner extremity. The shoulder 12 is adapted to engage the extremity of the plunger, which forms a stop when the key has been inserted to the position shown in Fig. 4. The notches 12 and 12 are then in line with the pin 9 and the projection 10 of the trigger, respectively, while the part 12 of the key is adjacent the bend 10 of the trigger. Then if the key be givena quarter-turn, approximately, the key part 12 will engage the bond 10 of the spring-trigger and draw the projection 10 inwardly to release the plunger, which may then be drawn into the casing 8 by pulling on the key in the direction indicated by the arrow in Fig. 4, since the notches 12 and 12 will catch the pin 9 and the trigger projection 10, respectively. When the plunger is in the locking position, (shown in Fig. 1,) it passes between the spokes 13 of the wheel 13. The key 12 or any other suitable device may be employed to push the plunger to the locking position.

IOC

The location of the cross-pin 9 and the trigger projection 10 may be varied in different locks, requiring a corresponding change in the keys, whereby any key may be only employed to open one lock.

The opening 5 of the integral bracket 5 is surrounded by an unbroken wall having no slit or division to permit its removal except by slipping it over the lower end of the forkarm after detaching said arm from the axle of the Wheel. The face of the washer 7 adjacent the walls of the bracket is beveled to facilitate the compression of the bracketwalls in order to secure the bracket to the fork-arm. Y

Having thus described my invention, what I claim isg 1. In a bicycle-lock the combination of a bracket having an opening surrounded by an unbroken wall and arranged to be applied to a part of the frame of the machine adjacent wheel thereof, means applied to the bracket for compressing its walls upon the part to which it is attached, to fasten it in place, a casing mounted on the bracket, and a plunger located within the casing and adapted to .be projected between the spokes of the adjacent wheel of the machine.

2. In a bicycle-lock the combination with a casing adapted to be attached to a bicycle or other suitable machine adjacent one of the wheels thereof, of a hollow plunger located in said casin g and provided with a spring-trigger having a projection normally engaging an opening in the shell of the plunger which is arranged to be projected from the casing to pass between the spokes of the wheel, the easin g being provided with a recess in which the projection of the spring-trigger passes when the plunger has reached the locking position, the plunger being provided with a cross-pin projecting from its shell and entering a groove formed in the casing.

3. In a bicycle-lock the combination with a casing adapted to be attached to a bicycle or other suitable machine adjacent one of the wheels thereof, of a hollow plunger located in said casing and provided with a spring-trigger having a projection normally engaging an opening in the shell of the plunger which is arranged to be projected from the casing to pass between the spokes of the wheel, the easing being provided with a recess in which the projection of the spring-trigger passes when the plunger has reached the locking position, the plunger being provided with a cross-pin projecting from its shell and enteringa groove formed in the casing, and the trigger being provided with a bend adjacent its locking projection, which bend is adapted to be engaged by a key as the latter is turned whereby the trigger projection may be withdrawn from the recess of the casing.

4. A bicycle-lock provided with a bracket having an opening surrounded by an unbroken wall, said opening being adapted to fit a fork-arm of the bicycle adjacent the wheel, whereby the said bracket can only be removed by detaching the fork-arm from the axle of the wheel, and means applied to said bracket for compressing its walls upon the fork-arm to secure the lock in place.

5. A bicycle-lock provided with a bracket having an opening surrounded by an unbroken wall, said opening being adapted to fit a fork-arm of the bicycle adjacent the wheel, whereby the said bracket can only be removed by detaching the fork-arm from the axle of the wheel, said bracket being provided with a threaded projection adapted to receive a nut, and a washer beveled on its inner surface to engage the walls of the bracket to facilitate the compression of said walls as the nut is forced against the washer.

In testimony whereof I affix my signature in presence of two witnesses.

HARVEY M. \VOOD.

Witnesses:

DORA 0. Stuck, A. P. GRANGER. 

